Doctor profile · Federal record
Dr. William Flader, M.D.
Emergency Medicine Physician (CMS: Emergency Medicine) · Smithtown, NY
- NPI 1487678991
- Accepts Medicare
- MIPS 76.5 / 100 · 2023
- 45 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
50 Route 25A
Smithtown, NY 117871348
(631) 862-3110 - Mailing address
-
43 Annandale RD
Stony Brook, NY 117902405
Credentials & registration
- NPI registered
- July 2006 — 20 yrs on file
- Profile last updated
- July 8, 2007
- Year of graduation
- 1981 — 45 yrs since
- Specialty taxonomy
- 207P00000X — NUCC code
- State license (1)
- New York #163266
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1487678991. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
926
Distinct HCPCS
10
Medicare allowed
$72,071
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 380 | 359 | $106 | |
87426 |
Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus | 107 | 106 | $34 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 78 | 76 | $149 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 76 | 76 | $133 | |
87804 |
Detection test by immunoassay with direct visual observation for influenza virus | 66 | 33 | $16 | |
81002 |
Urinalysis, manual test | 62 | 59 | $3 | |
87428 |
Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus and influenza | 45 | 45 | $30 | |
87880 |
Detection test by immunoassay with direct visual observation for streptococcus, group a (strep) | 42 | 42 | $16 | |
71046 |
X-ray of chest, 2 views | 29 | 29 | $39 | |
99212 |
Established patient office or other outpatient visit, 10-19 minutes | 26 | 26 | $68 |
In context: peer comparison
Among 7 peers in Smithtown Emergency Medicine Physician, average services per provider: 88. This provider delivers 11× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
279
Patients
274
Total drug cost
$2,704
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Prednisone | Generic | 65 | 64 | $121 |
| Doxycycline Monohydrate | Generic | 36 | 36 | $360 |
| Fluticasone Propionate | Generic | 29 | 29 | $461 |
| Albuterol Sulfate Hfa (Albuterol Sulfate) | Brand | 27 | 25 | $803 |
| Nitrofurantoin Mono-Macro (Nitrofurantoin Monohyd/M-Cryst) | Brand | 26 | 26 | $333 |
| Amoxicillin-Clavulanate Potass (Amoxicillin/Potassium Clav) | Brand | 24 | 24 | $244 |
| Amoxicillin | Generic | 18 | 17 | $74 |
| Naproxen | Generic | 17 | 17 | $50 |
| Cephalexin | Generic | 14 | 14 | $77 |
| Sulfamethoxazole-Trimethoprim (Sulfamethoxazole/Trimethoprim) | Brand | 12 | 11 | $43 |
Frequently asked questions
What is Dr. William Flader's medical specialty?
Dr. William Flader practices Emergency Medicine Physician in Smithtown, NY.
Where does Dr. William Flader practice?
Dr. William Flader practices at 50 Route 25A, Smithtown, NY 117871348. Office phone: 6318623110.
What is Dr. William Flader's NPI?
Dr. William Flader's National Provider Identifier (NPI) is 1487678991, issued by NPPES.
Does Dr. William Flader accept Medicare assignment?
Yes. Dr. William Flader accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. William Flader commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus (HCPCS 87426); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.